Cialis helps men to achieve and sustain an erection for longer periods while having sexual activities. It is an oral medication.

Usage

You must always follow your doctor’s dosage instructions while taking Cialis. If you still have any doubts then there will be detailed dosage instructions on the medicine label.
Cialis comes in various doses like 5mg, 10mg and 20 mg. The ideal dose for starting with Cialis is 10mg once a day. You need to take it half an hour before sexual activity.

Missed Dose

You need to take Cialis only before any sexual activity. You cannot take Cialis more than one dose a day.

Storage

Store Cialis at room temperature.

Overdose

You must contact your doctor immediately or contact an emergency medical center if you suspect an overdose.

Safety Information

Discuss your past/current medical history in detail with your doctor before beginning treatment with any new medication. If you are using any herbal supplements or over the counter medication, including vitamin pills, then mention it to your doctor.
Please mention to your doctor if you have suffered from or are suffering from medical conditions like using a nitrate drug for chest pain or heart problems.
Doctors advise against using the drug if you are allergic to any ingredient in it or if you are also using a nitrate drug for chest pain or heart problems, including
nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, Minitran, Deponit, Transderm-Nitro),
isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate),
isosorbide mononitrate (Imdur, ISMO, Monoket), or recreational drugs such as amyl nitrate or nitrite ("poppers").

Cialis when taken with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke or heart attack. Tell your doctor if you have any of the following conditions before taking tadalafil:
a recent history a heart attack (within the past 90 days);
a recent history of stroke or congestive heart failure (within the past 6 months);
angina (chest pain);
high or low blood pressure;
liver disease;
kidney disease (or if you are on dialysis);
a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia;
a bleeding disorder such as hemophilia;
a stomach ulcer;
retinitis pigmentosa (an inherited condition of the eye);
a physical deformity of the penis (such as Peyronie's disease); or
if you have been told you should not have sexual intercourse for health reasons.